Answer:
def word_wrap(message, length=79):
"""
Wrap a message to a specified line length.
Args:
message (str): The message to be wrapped.
length (int): The maximum line length. Default value is 79.
Returns:
str: The wrapped message.
"""
lines = message.split('\\')
output = []
for line in lines:
words = line.split(" ")
if len(words) > 0:
output_line = words[0]
for word in words[1:]:
if len(output_line + f' {word} ') > length:
output.append(output_line)
output_line = f"{word}"
else:
output_line = f"{output_line} {word}"
output.append(output_line)
return '\\'.join(output)